URIs
Uniform Resource Identifiers (URI) are used to identify "resources" on the web. URIs are commonly used as targets of HTTP requests, in which case the URI represents a location for a resource, such as a document, a photo, binary data. The most common type of URI is a Uniform Resource Locator (URL), which is known as the web address.
URIs can be used to trigger behaviors other than fetching a resource, including opening an email client, sending text messages, or executing JavaScript, when used in other places such as the href of an HTML <a> link.
Reference
The URI reference provides details about the components that make up a URI.
- Schemes
-
The first part of the URI, before the
:character, which indicates the protocol the browser must use to fetch the resource. -
The section that comes after the scheme and before the path. It may have up to three parts:
userinformation,host, andport. - Path
-
The section after the authority. Contains data, usually organized in hierarchical form, to identify a resource within the scope of the URI's scheme and authority.
- Query
-
The section after the path. Contains non-hierarchical data to identify a resource within the scope of the URI's scheme and naming authority along with data in the path component.
- Fragment
-
An optional part at the end of a URI starting with a
#character. It is used to identify a specific part of the resource, such as a section of a document or a position in a video.
Guides
The URI guides help you work with URIs on the web.
- Choosing between www and non-www URLs
-
Guidance on when sites should use a
www.prefix in URLs (www.example.comvsexample.com).
Specifications
| Specification |
|---|
| Unknown specification |